Concrete Overlays in SeaTac, WA

Concrete overlays in SeaTac: what to know

A coat is a surface layer and does not change the footprint. A surface layer cannot pin down a corner that keeps moving, so a slab that rocks, cracks along one line, or holds standing water gets repaired before the coat goes on. Water that stays on the surface after rain can point to a slope problem, and we check that before deciding how thick the coat should be.

Walk or driveway work inside the City right-of-way is covered by the Right-of-Way Use Permit. A coat that stays on the private lot may sit outside that rule. Regrading tied to the overlay, though, counts toward the clearing and grading triggers, including the 50 cubic yard cut or fill line, so we settle that scope first.

Permits and rules in SeaTac

The SeaTac pages we read do not address resurfacing an old slab, so we confirm how the city treats one before we quote. We confirm whether the coat counts as work in the City right-of-way, and whether any regrading tied to it reaches clearing and grading review. Those two answers decide the scope and the permit path.

Rules change and vary by parcel, so we confirm the current requirements with the city before we start.

How we approach it

Map any hollow, soft, or sunken corners on the slab before choosing a coat
Fix cracks that still open and close, since no coat holds a slab that is shifting
Lay out the walk and apron against the right-of-way line before any material is ordered
Hold off on any regrading until the clearing and grading trigger is confirmed

For the full process, see our Concrete Overlays page.

Building in the cold months? See our guide to winter concrete pours.

Our concrete overlays work, serving SeaTac

Examples of our work. We build concrete overlays in SeaTac and the cities around it. See all of our work

Questions from SeaTac homeowners

Is a surface coat a good fix for an older SeaTac driveway?

Sometimes. A coat works on a sound surface, while a slab with a moving crack or a low corner needs repair first. We check the slab’s movement before we recommend a coat, and we confirm any city permit question before we quote.

Does a sidewalk coat in SeaTac need a city right-of-way permit?

The city’s Right-of-Way Use Permit names pedestrian walkways among its examples. We confirm whether a coat on your walk counts as work in the right-of-way before anything is applied.

Could a coat on a SeaTac lot trigger clearing and grading review?

A coat alone is a surface job, but regrading tied to it can trigger review. The city’s STE page counts a disturbed area of 7,000 square feet or larger as a trigger, and so is a cut over 4 feet deep paired with 3 feet of fill. We confirm the scope with the city before work starts.